Mathematics, 08.09.2020 14:01 xxaurorabluexx

Katie invested a total of $7000, part at 4% simple interest and part 5% simple interest. At the end of 1 year, the investments had earned $321 interest. How much was invested at each rate?

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Katie invested a total of $7000, part at 4% simple interest and part 5% simple interest. At the end...

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